65525401 has 2 divisors, whose sum is σ = 65525402. Its totient is φ = 65525400.

The previous prime is 65525399. The next prime is 65525431. The reversal of 65525401 is 10452556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53275401 + 12250000 = 7299^2 + 3500^2 .

It is a cyclic number.

It is not a de Polignac number, because 65525401 - 2¹ = 65525399 is a prime.

Together with 65525399, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 65525401.

It is not a weakly prime, because it can be changed into another prime (65525431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32762700 + 32762701.

It is an arithmetic number, because the mean of its divisors is an integer number (32762701).

Almost surely, 2^65525401 is an apocalyptic number.

It is an amenable number.

65525401 is a deficient number, since it is larger than the sum of its proper divisors (1).

65525401 is an equidigital number, since it uses as much as digits as its factorization.

65525401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 65525401 is about 8094.7761550274. The cubic root of 65525401 is about 403.1529999260.

Adding to 65525401 its reverse (10452556), we get a palindrome (75977957).

The spelling of 65525401 in words is "sixty-five million, five hundred twenty-five thousand, four hundred one".